typical zipalignment script

ZDB=/data/zipit.db
[ -f \$ZDB ] || : > \$ZDB
_log=/data/zipsql.log
cat /dev/null > \$_log
date +"%h, %d -- %R" > \$_log
echo -e "\\\n\\\t-----ZIPALIGN-----\\\n" >> \$_log

##Zipalign
stdate=\$(date +%s)
mount -o remount,rw /system
for app in \`ls -d /system/app/* /data/app/* /system/priv-app/*\`; do
    apk=\$(ls \$app/*.apk)
    [[ \$apk -ot \$ZDB && \$(grep -F \$app \$ZDB) ]] && {
        printf "Already checked %s in %s\\n" "\${app##*/}" "\$(cut -d/ -f2 <<<\$app | tr 'a-z' 'A-Z')" >> \$_log
        continue
    }
    zipalign -c 4 \$apk && {
        grep -ixq \$app \$ZDB || echo \$app >> \$ZDB
        printf "Already aligned %s in %s\\n" "\${app##*/}" "\$(cut -d/ -f2 <<<\$app | tr 'a-z' 'A-Z')" >> \$_log
    } || {
        printf "Now ZipAligning %s in %s\\n" "\${app##*/}" "\$(cut -d/ -f2 <<<\$app | tr 'a-z' 'A-Z')" >> \$_log
        zipalign -f 4 \$apk \$apk.zipped && {
            mv -f \${apk}.zipped \$apk
            grep -iF \$app \$ZDB || echo \$app >> \$ZDB
        } || {
            echo "Error ZipAligning \$app" >> \$_log
        }
    }
done
diff=\$((\`date +%s\`-stdate))
echo -e "\\\nZipaligning finished in \$diff seconds !!" >> \$_log
 mount -o remount,noatime,nodiratime,ro,barrier=0,exec,suid /system 2>/dev/null